The invention belongs to the technical field of agricultural machinery and particularly relates to an intelligent fruit tree fertilizing machine. The intelligent fruit tree fertilizing machine comprises a traveling unit, a fertilizer-water mixing unit and an execution unit. By adoption of a fertilizer-water mixing device, mixed output of a liquid fertilizer and water can be completed, and accuratefertilization can be realized by fertilizer concentration adjustment according to different fertilizer concentration requirements of different fruit trees. By a lifting type hydraulic plate for mounting of a fertilizing gun, the fertilizing gun is capable of conveniently and quickly entering the soil to complete fertilization, and time saving, labor saving and high operating efficiency are realized. By adoption of an extended-range diesel-electricity hybrid traveling platform, sufficient energy supply can be guaranteed, the requirement on long-time fertilization is met, and energy consumptionand pollutant emission are reduced to a great extent. The intelligent fruit tree fertilizing machine has advantages that mechanical pea cutting and sunning can be completed effectively, accurate traveling control, fertilizer-water mixing, fertilizer injection and the like can be realized, and a gap of intelligent and mechanical operation in fruit tree fertilization in China is filled.